Grapple.



G N LP L F. RW A DR G Pm APPLICATION FILED NOV. 5. l9-

Patented June 11, 1918.

m m m CHARLES nmnnsrrnmtme, or :ann'nnfasoiv, gamma. 1

' eanrrtn rs a ee 9 Lettmre et- 1 Patented J 1111611, 1918.

Application filed nvm'ber 5, 1917? Serial No. 200,328.

To all whom it may concern:

Be it known that I, CHARLES E. DREILING, a citizen of the United States,and a resident of Henderson, in the county of Henderson and State ofKentucky, have invented, certain new and useful Improvements inGrapples, of which the following is a specification.

My invention is an improvement in grapupon the grapple will tighten thegrapple on the fixed object.

In the drawings: Figure l is a perspective view of the improved grapple;

Fig. 2 is a section on the line 2-2 of Fig. 1. i

In the present embodiment of the invention, a palr of gripping dogs 1and 2 is provided, the dog 1 being forked at one end, and the arms ofthe fork are provided with laterally extending spurs 3. The dog has asingle spur 4, and the arrangement 1s such that the spur 4 will graspthe fixed ob ect between the spurs 3. Each dog is pivoted intermediateits ends between a pair of bars 5, by means of a bolt and nut 6, and thepivotal connection with the bars is made adjustable, a series ofregistering openings being provided at each end of the pair forrecelving the bolt 6. h

The end of each dog remote from the spurs 3 and 4: is pivoted between apair of bars 7 and 8, respectively, by means of bolts and nuts 9, andthis pivotal connection is ad justable in the same manner asthatinconnection with the bars 5, series of registerin openings beinprovided in each pair 0 bars for receiving the bolts. The ad acent endsof the pairs of bars 7 and 8 are pivotally connected, as indicated at10, and itwill be noticed that the ends of the bar 8 are oflsetoutwardly to engage the outer faces of the bars 7.

A double eye bar 11 has one of its eyes engaged by the bolt 10, the saideye being arranged between the bars 7, and the other eye of the bolt isadapted for connection with the hook of one pulle of a block and tackle,for instance. Since t e aggregate length of the pairs of bars 7 and 8 isgreater than that of the bars 5, it will be evident that when tractionis made on the double eye bolt 11 the bars 7 and 8 moving into alinementwill cause the dogs to swin toward each other at the spurred end. C011springs 12 are arranged between the outer ends of the bars 5, 7 and 8, aspring being arranged between the bars 5 at each end thereof and theadjacent end of the adjacent pair of plates 7 or 8 as the case may be.These springs normally tend to straighten the pairs of bars 7 and 8-,and to swing the dogs into gripping position. The farther the bars 7 and8 are from alinement the more widely apart will be the spurs of the dogs1 and 2.

Flexible members 13, chains in the present instance, are arrangedbetween the pivotal connection 10 and the centers of the bars 5, andthese chains limit the swinging movement of thebars 7 and 8 into aposition where they will be in alinement.

In use, when the grapple is to be connected with a joist, for instance,to support a block and tackle, the pivotal connection 10 is moved towardthe bars 5 to open the jaws of the dogs. The said jaws are now placed oneach side of the joist, and the pivotal connection is released. Thesprings 12 tend to straighten the bars 7 and 8 and to cause the dogs'togrip the joists. The greater the traction on the eye bolt 11 the moretightly will the jaws of the dogs be forced into contact with the joist.For gripping smaller objects, the bolts 6 and 9 may be moved inwardly,while for grippin larger objects they may be moved outward y. Thegrapple may also be used for engaging logs, for 1nstance, to transportthe same, in whichcase the position would be reverse from that shown inFig. 1. The operation, however, will be the same.

. I claim:

A grapple comprising a pair of dogs having gripping spurs at one end, abar arranged transversely of the dogs intermediate the ends thereof andpivotally connected to the dogs nears its ends, a bar pivotedintermediate it ends to each dog at the end remote from the spur, saidbars being pivotally connected at their adjacent ends, tractionmechanism connected with the pivatal connection, spring arranged betweenthe outer ends of the last named bars and the ends of the first namedbar and normally of. the traction mechanism upon" the said tending toaline said last name]? bars, and bare 5; 1 ii i 1 flexibe connectionbetween t e" connect i i ends of said last named bars and the first 5named bar to limit'the movelnent'cf thesaid' Witnesses? bars attheirpivotal connection away from CHAS. M. MEADE,

the first named bar and to distribute the pull WILLIAM CRAWFORD.

Ce tics bf this patent may be obtained "fdrfive cents aeh,' by adiiitsing the Commissionefifl ii'ziltmta, ww h n nf a l

